“Create a silent dwelling place for one hundred bodies and one hundred hearts” – such was the prayer that Father Marie-Alain Couturier offered up to Le Corbusier.

Xenakis’s mark is found in the “musical” or “undulatory” glazed panels that adorn one facade of the Couvent. He created a spectacular counterpoint over three levels of windows by varying the widths of the window panels according to the proportions of the Fibonacci series.